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Satellite network technology

机译：卫星网络技术

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摘要

Traditionally, fixed satellite services have chiefly been used to support voice communications using capacity allocated to switched circuits, broadcast applications where capacity is allocated to regular TV transmissions, and low speed inter- active data applications. Increasingly, however, satellites are being required to serve as high speed links in data networks handling data packets. To function efficiently on terrestrial packet networks (where errors are rare and the delays are short), the protocols, designed in an earlier era, are unsuited to satellite circuits, and considerable work is now underway to try to remedy these shortcomings. This paper reviews the problems encountered when Internet traffic must be carried over satellite and changes being considered and/or implemented in the Transmission Control Protocol/Internet Pro- tocol (TCP/IP) suite to improve its efficient operation over satellites. Also discussed are strategies that can be employed at satellite earth stations to aid in integrating satellite links seamlessly into terrestrial data networks.
机译：传统上，固定卫星服务主要用于支持语音通信，使用分配给交换电路的容量，广播应用（其中容量分配给常规TV传输）和低速交互式数据应用。但是，越来越需要卫星作为处理数据分组的数据网络中的高速链路。为了在陆地分组网络（错误少见且延迟短）上有效地工作，早先设计的协议不适用于卫星电路，并且正在进行大量工作来尝试弥补这些缺陷。本文回顾了必须通过卫星承载Internet通信以及在传输控制协议/ Internet协议（TCP / IP）套件中考虑和/或实施更改以提高其在卫星上的有效运行时遇到的问题。还讨论了可在卫星地球站采用的策略，以帮助将卫星链路无缝集成到地面数据网络中。

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